You know, honestly, if a basic set of lugs were available that resembled the long-ish point lugs on my old mass-produced Specialized Allez, that's all I would need.
I think being able to assemble all of the components for a simple frame, including 9/6/9 butted 4130, fork crown, dropouts, bosses, and stops, for around $200 would be a mighty cool thing indeed. Add a reasonably priced home-brazing setup ($250 or less with hoses, regulator, and torch) that used some form of readily available bottled gas (propane) that got hot enough to brass braze (frame number 1 was silver, which as you know is really expensive), and I'd be working on my 2nd or 3rd frame right now.
Pete